#include "OperatorSubstract.h"

OperatorSubstract::OperatorSubstract()
{
    //ctor
}

OperatorSubstract::~OperatorSubstract()
{
    //dtor
}

double OperatorSubstract::exec(double a, double b) const
{
    return a - b;
}

std::string OperatorSubstract::str() const
{
    return "-";
}
